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HD 156846 b - 版本历史
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<p><b>新页面</b></p><div>{{Planetbox begin <br />
| name = HD 156846 b<br />
}} <br />
{{Planetbox star<br />
| star = [[HD 156846]]<br />
| constell = [[蛇夫座]]<br />
| RA = {{RA|17|20|34.3100}}<br />
| DEC = {{DEC|–19|20|01.486}}<br />
| dist_ly = 160<br />
| dist_pc = 49<br />
| class = G0V<br />
}}<br />
{{Planetbox orbit <br />
| semimajor = 0.99<br />
| semimajor_gm = 148<br />
| periastron = 0.15<br />
| periastron_gm = 22<br />
| apastron = 1.83<br />
| apastron_gm = 274<br />
| eccentricity = 0.8472±0.0016<br />
| period = 359.51±0.09<br />
| period_year = 0.98427<br />
| speed = 30.1<br />
| arg_peri = 52.23±0.41<br />
| t_peri = 2453998.09±0.05<br />
| semi-amp = 123.9<br />
}}<br />
{{Planetbox character <br />
| minimum_mass = 10.45±0.05<br />
}} <br />
{{Planetbox discovery <br />
| discovery_date = 2007年10月26日<br />
| discoverers = Tamuz ''et al.''<br />
| discovery_site = [[拉西拉天文台]]<br />
| discovery_method = [[都卜勒光譜學]]<br />
| discovery_status=已發表論文<br />
}} <br />
{{Planetbox catalog<br />
| names = HIP 84856 b, HR 6441 b<br />
}}<br />
{{Planetbox end}}<br />
<br />
'''HD 156846 b'''是一個距離地球約160光年的[[系外行星]]，環繞位於[[蛇夫座]]的恆星[[HD 156846]]。 <br />
<br />
==概要==<br />
HD 156846 b是目前已知的系外行星中軌道離心率最大的之一。該行星軌道的高離心率可能是因為母恆星的[[紅矮星]]伴星。本行星距離母恆星的平均距離是0.99天文單位，與日地平均距離相當。而它和母恆星的距離在0.15和1.83天文單位之間變化，軌道週期360日。HD 156846 b質量下限高達10.45倍木星質量，但因軌道傾角的值仍不明，仍無法得知其真實質量。如果能得知該行星的真實質量和軌道傾角，它可能實際上是[[棕矮星]]。<br />
<br />
==參考資料==<br />
*{{cite journal | url=http://www.aanda.org/articles/aa/full/2008/12/aa8737-07/aa8737-07.html | author=Tamuz ''et al.'' | title=The CORALIE survey for southern extra-solar planets XV. Discovery of two eccentric planets orbiting HD 4113 and HD 156846 | journal=[[Astronomy and Astrophysics]] | volume=480 | issue=3 | year=2008 | pages=L33–L36 | doi=10.1051/0004-6361:20078737 | last2=Ségransan | first2=D. | last3=Udry | first3=S. | last4=Mayor | first4=M. | last5=Eggenberger | first5=A. | last6=Naef | first6=D. | last7=Pepe | first7=F. | last8=Queloz | first8=D. | last9=Santos | first9=N. C. | bibcode=2008A&A...480L..33T | access-date=2012-03-03 | archive-date=2019-06-24 | archive-url=https://web.archive.org/web/20190624204010/https://www.aanda.org/articles/aa/full/2008/12/aa8737-07/aa8737-07.html | dead-url=no }}<br />
<br />
==外部連結==<br />
* {{cite web | url=http://exoplanet.eu/planet.php?p1=HD+156846&p2=b | title=Notes for planet HD 156846 b | work=The Extrasolar Planets Encyclopaedia | accessdate=2008-08-24 | archive-date=2012-04-19 | archive-url=https://web.archive.org/web/20120419124650/http://www.exoplanet.eu/planet.php?p1=HD+156846&p2=b | dead-url=no }}<br />
* {{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+156846 | title=HD 156846 | work=Exoplanets | accessdate=2008-08-24 | archive-url=https://web.archive.org/web/20091125000602/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+156846 | archive-date=2009-11-25 | dead-url=yes }}<br />
{{Sky|17|20|34.3100|-|19|20|01.486|160}}<br />
<br />
[[Category:蛇夫座]]<br />
[[Category:类木行星]]<br />
[[Category:2007年发现的系外行星]]<br />
[[Category:徑向速度法發現的系外行星]]</div>
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